Have I been cheated?

I brought my Fiat Brava Bj. 2001 JTD to a free workshop on Thursday. He should change Achsmanchette passenger side behind the wheel, front 2 tires 195 50 R15, set the brake blocks and the track + TÜV AU. He meant 400€ around. Well I picked up my car, and got no invoice, the workshop said he would have to count the MwST on it. Final price 423€ incl. Tüv fee and AU fee. NO ACCOUNTS!!! My car did not come by the TÜV of course I didn’t know where it went. Well, after I thought about it this weekend, a lot of me was thinking that my car was still moving to the left, and my steering wheel is not straight. But he’s supposed to have the track of the car, because a light bulb is broken, the reversing lights didn’t go even though they went perfectly before. (I saw the fuse was broken today) And a headlight mount would be gone!?!??!???? I’ve never gone forward or an accident. I don’t know where it went. I drove extra on a highway where there is a very fresh surface on it. Get out, and he pulls clearly to the left 🙁 So today I drove to the pit and on the crossbars there is nothing to see, totally dirty. Hard to say if iwas was solved. Achsmanchette and tires (NoName never heard of) he did, but that’s what I saw. A case for the police?